Year	annual % growth
1971	2.581414191416485
1972	-0.7484838939118106
1973	40.61890459029755
1974	2.940360641525956
1975	10.150004591572667
1976	-7.947281275388335
1977	-11.354023660299333
1978	7.759760416191114
1979	-6.743254062850738
1980	7.661567664134907
1981	6.47883982702902
1982	-6.495676561527844
1983	-4.591802962846359
1984	5.838441036386669
1985	3.644121357578612
1986	-9.726374155034392
1987	18.164736825004695
1988	-2.5447498868427374
1989	-9.169475902243718
1990	7.60405038718423
1991	4.577179710910315
1992	1.6080622779774245
1993	4.195292203976592
1994	-0.33101774010299323
1995	-1.12343308994798
1996	3.6012301595435474
1997	2.456620339161475
1998	2.190819546393172
1999	1.7377703672631526
2000	1.6954496021382965
2001	3.332649959643021
2002	4.273670360785516
2003	-1.9041100047491426
2004	-1.005680089106292
2005	2.070360208648154
2006	2.0787697949768784
2007	3.545509945603186
2008	1.78245007172508
2009	4.114920127322662
2010	2.4616196657632656
2011	2.9367702048485
2012	3.345380019142908
2013	3.65667013460957
2014	3.1840899065524297
2015	3.190019928775996
2016	4.290067917732586
2017	3.552880142305753
2018	3.8976600162989143
2019	2.8572201363932663
2020	2.708399994597272
2021	5.088929875744029
2022	0.14164000710239577
2023	7.914449846535064